Some of the most enduring novels in English literature were written within the walls of this Georgian-era building.

Nope, not Washington Irving's house.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

The drawbridge used in the filming of the movie 'Annie' has been in the open position as it was in the movie for decades.

The radio station that's been promising to make love to you for the last 15 years—if you happen to be on one specific block in suburban New Jersey.

The tomb of one of Scotland's bloody historic villains is a magnet for bumbling desecrators.

The dance of this huge clock is a magnificent and eerie commentary on good and evil in the history of humankind.

Brass bricks outline the locations of Edinburgh's lost, lively market stalls.

The building where Mary, Queen of Scots was said to have bathed in white wine.

Glasgow's memorial to the International Brigade volunteers from Great Britain who fought and died in the Spanish Civil War.

Inside this art museum resides one of Glasgow's most famous musical instruments.

A quartet of brightly colored mythical beasts stand sentry at this gateway.

This museum offers a glimpse into early 20th-century Glasgow life.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

This extinct volcano rises above Edinburgh and is special for its panoramic views over the city.

Dedicated to the Father of the British Fire Service.

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

This is the largest cemetery in Ireland and the first cemetery museum in the world.

This museum is dedicated to the most famous Irish writers in history.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

Home of the only civilian casualty at the Battle of Gettysburg.